There was an update that supports general ingress support: https://github.com/dgraph-io/charts/.
This was tested on GKE (ingress-gce, ingress-nginx) and AWS (aws-alb-ingress-controller, ingress-nginx), with ACM wild card certs and Google SSL SAN certs, and Let’s Encrypt w/ cert-manager.
I wonder though when using self-signed certs, if you would have problems with untrusted root CA issues on the browser.